Pixel Pop Defense Zone is an endurance game about defending the little space you have at the center of the screen from the relentless assault of pixels. Why are they attacking? No idea, just keep clicking them into oblivion! * Endless Gameplay: go as long as you can, see how well you can do! * Special Pixels: upgrade your defense, get rid of many pixels at once, and even stop time! * Adjustable Challenge: different difficulty settings for smooth play or crazy challenge!